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Fluval M100 100W Submersible Heater
Model: M100 · US configuration
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A 100-watt adjustable glass heater rated by Fluval for aquariums up to 30 US gallons, with an 11-inch body, a 66–86°F setting range and freshwater/saltwater use.
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Explore this buying guide ↗Why consider this model?
- A useful candidate when a freshwater or saltwater tank is within Fluval's 30-US-gallon rating, the keeper wants a dial-set temperature between 66°F and 86°F, and a glass in-tank heater suits the layout.
Tradeoffs to weigh
- This is a glass-tube heater, not a shatterproof polymer model or a documented guarded-heater package. Fluval says the setpoint-to-room difference and aquarium conditions can require more heating capacity, so a 30-gallon rating alone does not guarantee a target temperature.
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